Southwest Airlines is known for its low fares, free checked bags, and no change fees. As one of the largest domestic airlines in the U.S., it offers flexible travel options and excellent customer service. Travelers can enjoy the benefits of the Rapid Rewards loyalty program and find great deals on flights to various domestic and international destinations. For those seeking affordable air travel, Southwest provides easy booking and reliable service, making it a popular choice for cheap flights, last-minute deals, and hassle-free reservations.